I've seen the exact problem with every CME we have deployed using 12.11.XJ or later.
We raised a TAC case but Cisco TAC refuse to identify it as a bug, they called it feature change.
Basically Cisco have broken the H.323 standards based supplementary services feature that are used to with transfer can call-forwarding.
The workaround is to disable these services, but it has some minor short coming if you use gatekeepers for on net calls (toll bypass).
I believe that by adding the following should resolve your issue;
voice service voip
no supplementary-service h450.2
no supplementary-service h450.3
If you can log a TAC case to help get this problem identified as a bug, contact me directly and I will provide you the existing service reference number. Maybe if more people log it as an issue it might be resolved.
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